/Engine/Source/Developer/Localization/Public/LocTextHelper.h
Attempt to load (or create) the manifest and all archive files specified during construction.
True if all files were loaded (or created), false otherwise.
bool LoadAll ( const [ELocTextHelperLoadFlags](API\Developer\Localization\ELocTextHelperLoadFlags) InLoadFlags, [FText](API\Runtime\Core\Internationalization\FText) * OutError )